Level Sensors

Level sensors determine how full or how empty a container is. Level sensors provide an output electrical signal at predetermined levels to communicate when to open or close control valves.


Level Sensor Types


The choice of sensors is usually determined by which substance is being measured, the environment in which the sensor is to used and in which position the sensor needs to be mounted. Some of the most common level sensors are:


Capacitive level switches


  • Capacitive level switches provide a basic full/empty level indication determined by the mounting position of the sensor. This type of switch is non-contact and uses a sensing field to determine liquid levels. Capacitive sensors provide accurate switching even with heavy residue build-up.

Vibrating level probes


  • Vibrating level probes use a rod or a fork that constantly produce high-frequency vibrations. When the vibrating probe comes into contact with the medium, the vibration changes and the vibrating level switch outputs a switching command. Vibrating level switches are used as overfill protection devices or low-level indicators in liquids as well as in granular and powder bulk solids.

Conductive level switches


  • Conductive level switches are sensors that use stainless steel probes with an electrical contact output to measure a specific liquid level. Used in conjunction with a level control relay to set and monitor each probe. Applications include ponds, reservoirs, sumps, pharmaceuticals, closed vessels and open tanks.

Ultrasonic level sensors


  • Ultrasonic level sensors generate ultrasonic sound pulses that are reflected by the surface of a liquid medium. The time travelled by the ultrasonic pulse is calculated by the sensor which then determines the distance of the liquid to give an accurate fill level. The ultrasonic sensor’s response is influenced by turbulence, pressure, moisture, and temperature.

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Omschrijving Prijs Device Type Mounting Type Switch Output Body Material Cable Length Communication Protocol Minimum Operating Temperature Maximum Operating Temperature Maximum AC Voltage Maximum DC Voltage Maximum Current Maximum Pressure Gasket Material Current Rating
RS-stocknr. 889-1191
FabrikantnummerLU23-41
FabrikantFlowline
€ 771,68
Each
Aantal stuks
Ultrasonic Level Transmitter Vertical - Polycarbonate 4.6m - -35°C +60°C - 24V 20 mA 30psi Viton -
Nieuw
RS-stocknr. 191-9488
FabrikantRS PRO
€ 15,48
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Float External NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS-stocknr. 175-5067
FabrikantnummerUP56-213118
FabrikantSick
€ 634,00
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Ultrasonic Level Sensor with display G1 Thread - PBT, Stainless Steel 1.4571, TPU - - -25°C +70°C - 30V 20 mA 6bar - -
RS-stocknr. 889-1378
FabrikantnummerDS14-01
FabrikantFlowline
€ 413,40
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Controller, Ultrasonic Level Switch Vertical - Polycarbonate 1.2m - -35°C +60°C 24V 24V - 30psi Viton 1 A
RS-stocknr. 892-9378
Fabrikantnummer2160XD8ES1NNBA00001I1WA3WK1M5
FabrikantRosemount
€ 1.665,44
Each
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Fork Level Detector Side or Top Mount Relay Aluminium - - -70°C +260°C - - - 100bar Non Asbestos Carbon Fibre -
RS-stocknr. 191-9478
FabrikantRS PRO
€ 15,79
Each
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Float Threaded NO/NC Polyphenylene Sulphide 1m - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
Nieuw
RS-stocknr. 191-9481
FabrikantRS PRO
€ 14,85
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Float Threaded NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS-stocknr. 488-021
FabrikantnummerLK1023
Fabrikantifm electronic
€ 335,80
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- - PNP Stainless Steel/FKM/NBR/PBT/PC/PEI/PP/TPE - - 0°C +60°C - - 200 mA 0.5bar - -
RS-stocknr. 768-2003
FabrikantnummerWAVES61.EXX2RC
FabrikantVega
€ 498,91
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Vibrating Level Switch Cable Relay - - - -40°C +150°C - - 1 A dc, 3 A ac 1.1bar - -
RS-stocknr. 193-6795
FabrikantnummerLLG810D324-003-D
€ 198,88
Each
Aantal stuks
Liquid Level Switch Threaded Mount NPN Stainless Steel 316L - - -40°C +125°C - 30V 7.5 mA 600bar - 7.5 mA
RS-stocknr. 193-6797
FabrikantnummerPOS287411
€ 231,65
Each
Aantal stuks
Liquid Level Switch Threaded Mount NPN Stainless Steel 304 - - -25°C +140°C - 30V 25 mA 80bar - 25 mA
RS-stocknr. 137-2040
FabrikantnummerLR16-5021-20-01
FabrikantFlowline
€ 4.002,86
Each
Aantal stuks
Pulse Radar Liquid Level Transmitter Vertical HART 7, 2 Wire, 4 to 20 mA Stainless Steel 316L - - -40°C +150°C - 26.4V 20 mA 10bar Silicone 22.5 mA
RS-stocknr. 124-0137
FabrikantnummerLU10-1305
FabrikantFlowline
€ 277,66
Each
Aantal stuks
Ultrasonic Level Switch Vertical - PP 3m - -40°C +80°C - 36V - 10bar FKM 25 mA
RS-stocknr. 144-2575
Fabrikantnummer7ML5201-0FA0
FabrikantSiemens
€ 952,86
Each
Aantal stuks
Ultrasonic Clamp Mount - PBT - - -30°C +60°C - 30V - - - 25 mA
RS-stocknr. 193-6777
FabrikantnummerLLG710D3L24-003
€ 107,35
Each
Aantal stuks
Liquid Level Switch Threaded Mount NPN Stainless Steel 316L - - -40°C +125°C - 30V 7.5 mA 100bar - 7.5 mA
RS-stocknr. 191-9497
FabrikantRS PRO
€ 14,84
Each
Aantal stuks
Float External, Vertical NO/NC Polypropylene 1m - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
RS-stocknr. 144-9329
Fabrikantnummer84800009
FabrikantXylem
€ 632,18
Each
Aantal stuks
10 Sensor Probe 1 m Bracket Mounted - - - - - - - - - - - -
RS-stocknr. 191-9469
FabrikantRS PRO
€ 15,44
Each
Aantal stuks
Float Horizontal NO/NC Polyphenylene Sulphide 1m - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS-stocknr. 124-0123
FabrikantnummerLU27-01
FabrikantFlowline
€ 565,08
Each
Aantal stuks
Ultrasonic Level Transmitter Vertical - PC 3m - -35°C +60°C - 24V 20 mA 2bar FKM -
RS-stocknr. 193-6780
FabrikantnummerLLG210D324-004-D
€ 186,45
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Aantal stuks
Liquid Level Switch Threaded Mount PNP Stainless Steel 316L - - -40°C +125°C - 30V 7.5 mA 100bar - 7.5 mA
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